Smart recover decisions start with the right membrane

By Mark Soto, GAF. 

Understanding TPO fleece-back recover options can help contractors deliver efficient, durable solutions on demanding commercial projects. 

When timelines tighten and budgets sharpen, commercial roofing decisions leave little room for uncertainty. For contractors weighing recover strategies, material choice can define not only installation efficiency but long-term performance and customer confidence. For GAF, that conversation increasingly centers on how single-ply TPO fleece-back systems align with the realities contractors face on occupied buildings, complex substrates and cost-sensitive projects. Understanding when and how fleece-back fits into recover work gives contractors a clearer path to delivering results that balance speed, durability and code compliance without cutting corners or compromising performance. 

Deciding between a roof recover vs. replacement 

When considering whether to pursue a roof recover or a replacement, the choice often comes down to customer budget, roof condition and time constraints. 

Weighing the budget 

A roof replacement is typically more expensive than a roof recover project. With a roof replacement, you'll usually need to tear out the existing system before adding new layers of protection. With a roof recover, assuming the roof deck and existing roofing system are structurally sound and free of moisture, you might be able to avoid the challenging work of tearing off any existing material. 

Of course, the less work you need to do, the more affordable it is for customers. Accordingly, building owners concerned about budget costs may prefer a roof recover over a complete replacement. Before finalizing this decision and beginning the recover process, it's important to check the state and local building codes. Specific codes may limit the number of roofing systems on a particular structure. 

Considering the roof's current condition 

If a client's roof has been dealing with moisture leaks or ponding water, this might signal that the roof decking and insulation below are water damaged. When roof decking is damaged beyond repair, it's not an option to add another layer over it, as it needs to be replaced. 

You can do a thermal scan to detect any built-up moisture in materials and potentially find the source of a leak. You can also take some core samples of the insulation and membrane to check for water damage and the level of degradation. 

An inspection is one of the most important steps for figuring out whether to tear out the existing roof or if you can perform a roof recover. Informative industry materials can also help. To this end, GAF maintains a playlist of educational videos on YouTube that you can use to learn what other commercial roofers look at when evaluating roof recover projects. 

Understanding the timeline 

The final component to consider when deciding if a roof recover is possible is how much time is allotted for the project. The required work may need to be performed during short windows. Based on the client's availability and your ability to coordinate work on the project, you can help them settle on an arrangement that satisfies their needs without causing you and your crew to feel rushed. Obviously, as there is typically less work involved in a roof recover than a complete replacement, a recover may sometimes be chosen in situations with a short timeline. 

How TPO fleece-back supports recover projects 

There are significant benefits to choosing TPO fleece-back. This roofing product is known for its installation options and long-term performance. 

Durability 

Since TPO fleece-back is lightweight, it doesn't add too much stress to a commercial roof that might already house multiple heavy appliances and objects in addition to existing roofing layers. TPO membranes offer puncture resistance and typically come in various thicknesses; high-quality options like the GAF EverGuard® TPO Fleece-Back Membranes offer choices between 100, 115 and 135 membrane thickness. Its robust build and ability to handle impacts make it an excellent material for roofs that experience lots of foot traffic and hail1. 

Ease of installation 

Another benefit of TPO fleece-back is that it's easy to install, because you don't need to add a cover board or slip sheet. When installed over other systems like a modified bitumen cap layer, fleece-back TPO does an excellent job of blocking asphalt staining from the existing roofing system. 

With mechanically attached or low-rise foam adhesive options, contractors can get the material attached to a roof quickly. If a customer prefers a roof recover since it's faster, you can speed up the process further by using TPO fleece-back. 

UV resistance 

The material is also built to be UV resistant, and white or lighter colors can reflect the sun's rays away from the roof, which can lower rooftop temperatures. 

By maintaining a stable temperature on a roof, it can help maximize the longevity of the roofing system and reduce cooling costs when it's warm outside. This is one of the strongest selling points of using TPO over other solutions: When you choose a quality material like the GAF EverGuard® TPO Fleece-Back Membrane, your clients can also qualify for long warranty coverage for up to 30 years2. 

Installation options 

There are two ways to install TPO fleece-back. You can mechanically attach it using fasteners to hold the material tightly against the roof decking, or it can be installed seamlessly using a low-rise foam adhesive. 

When it's mechanically attached, the material provides excellent wind resistance capabilities3. It's one of the fastest installation methods, however the fasteners require punctures to the membrane for installation. 

When a low-rise foam adhesive is used to install TPO fleece-back, the adhesive is sprayed onto the substrate, then the roofing material is rolled over it and becomes tightly attached. This installation method can be slightly more expensive than the mechanically attached option, but the fleece backing offers additional puncture resistance4. 

1 GAF warranties and guarantees do not provide coverage against traffic. GAF warranties and guarantees also do not provide coverage against traffic hail except where additional puncture resistance coverage is purchased on eligible jobs. Refer to gaf.com for more information on warranty and guarantee coverage and restrictions. 

2 For qualified systems only. Additional requirements apply. Contact GAF for more information. Refer to the applicable guarantee or warranty, available at gaf.com, for complete coverage and restrictions. 

3 GAF warranties and guarantees do not provide coverage against leaks or other damage caused by wind speeds in excess of 55 mph, except where additional wind coverage is purchased on eligible jobs. Refer to gaf.com for more information on warranty and guarantee coverage and restrictions. 

4 GAF warranties and guarantees do not provide coverage against hail or other punctures except where additional puncture resistance coverage is purchased on eligible jobs. Refer to gaf.com for more information on warranty and guarantee coverage and restrictions. 

Original article source: GAF